<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_File_Transfer
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Http.php 25087 2012-11-06 21:15:45Z rob $
 */
/**
 *
 * @see Zend_File_Transfer_Adapter_Abstract
 */
require_once 'Zend/File/Transfer/Adapter/Abstract.php';

/**
 * File transfer adapter class for the HTTP protocol
 * @category Zend
 * @package Zend_File_Transfer
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
class Zend_File_Transfer_Adapter_Http extends Zend_File_Transfer_Adapter_Abstract {

    protected static $_callbackApc = 'apc_fetch';

    protected static $_callbackUploadProgress = 'uploadprogress_get_info';

    /**
     * Constructor for Http File Transfers
     * @param array $options OPTIONAL Options to set
     */
    public function __construct ($options = array()) {
        if (ini_get ('file_uploads') == false) {
            require_once 'Zend/File/Transfer/Exception.php';
            throw new Zend_File_Transfer_Exception ('File uploads are not allowed in your php config!');
        }
        $this -> setOptions ($options);
        $this -> _prepareFiles ();
        $this -> addValidator ('Upload', false, $this -> _files);
    }

    /**
     * Sets a validator for the class, erasing all previous set
     * @param string|array $validator Validator to set
     * @param string|array $files Files to limit this validator to
     * @return Zend_File_Transfer_Adapter
     */
    public function setValidators (array $validators, $files = null) {
        $this -> clearValidators ();
        return $this -> addValidators ($validators, $files);
    }

    /**
     * Remove an individual validator
     * @param string $name
     * @return Zend_File_Transfer_Adapter_Abstract
     */
    public function removeValidator ($name) {
        if ($name == 'Upload') {
            return $this;
        }
        return parent::removeValidator ($name);
    }

    /**
     * Remove an individual validator
     * @param string $name
     * @return Zend_File_Transfer_Adapter_Abstract
     */
    public function clearValidators () {
        parent::clearValidators ();
        $this -> addValidator ('Upload', false, $this -> _files);
        return $this;
    }

    /**
     * Send the file to the client (Download)
     * @param string|array $options Options for the file(s) to send
     * @return void
     * @throws Zend_File_Transfer_Exception Not implemented
     */
    public function send ($options = null) {
        require_once 'Zend/File/Transfer/Exception.php';
        throw new Zend_File_Transfer_Exception ('Method not implemented');
    }

    /**
     * Checks if the files are valid
     * @param string|array $files (Optional) Files to check
     * @return boolean True if all checks are valid
     */
    public function isValid ($files = null) {
        // Workaround for WebServer not conforming HTTP and omitting CONTENT_LENGTH
        $content = 0;
        if (isset ($_SERVER['CONTENT_LENGTH'])) {
            $content = $_SERVER['CONTENT_LENGTH'];
        } else{
            if ( ! empty ($_POST)) {
                $content = serialize ($_POST);
            }
        }
        // Workaround for a PHP error returning empty $_FILES when form data exceeds php settings
        if (empty ($this -> _files) && ($content > 0)) {

            var_dump('----------');die;

            if (is_array ($files)) {
                if (0 === count ($files)) {
                    return false;
                }
                $files = current ($files);
            }
            $temp = array($files => array('name' => $files, 'error' => 1));
            $validator = $this -> _validators['Zend_Validate_File_Upload'];
            $validator -> setFiles ($temp) -> isValid ($files, null);
            $this -> _messages += $validator -> getMessages ();
            return false;
        }
        return parent::isValid ($files);
    }

    /**
     * Receive the file from the client (Upload)
     * @param string|array $files (Optional) Files to receive
     * @return bool
     */
    public function receive ($files = null) {
        if ( ! $this -> isValid ($files)) {
            return false;
        }
        $check = $this -> _getFiles ($files);
        foreach ($check as $file => $content) {
            if ( ! $content['received']) {
                $directory = '';
                $destination = $this -> getDestination ($file);
                if ($destination !== null) {
                    $directory = $destination . DIRECTORY_SEPARATOR;
                }
                $filename = $directory . $content['name'];
                $rename = $this -> getFilter ('Rename');
                if ($rename !== null) {
                    $tmp = $rename -> getNewName ($content['tmp_name']);
                    if ($tmp != $content['tmp_name']) {
                        $filename = $tmp;
                    }
                    if (dirname ($filename) == '.') {
                        $filename = $directory . $filename;
                    }
                    $key = array_search (get_class ($rename), $this -> _files[$file]['filters']);
                    unset ($this -> _files[$file]['filters'][$key]);
                }
                // Should never return false when it's tested by the upload validator
                if ( ! move_uploaded_file ($content['tmp_name'], $filename)) {
                    if ($content['options']['ignoreNoFile']) {
                        $this -> _files[$file]['received'] = true;
                        $this -> _files[$file]['filtered'] = true;
                        continue;
                    }
                    $this -> _files[$file]['received'] = false;
                    return false;
                }
                if ($rename !== null) {
                    $this -> _files[$file]['destination'] = dirname ($filename);
                    $this -> _files[$file]['name'] = basename ($filename);
                }
                $this -> _files[$file]['tmp_name'] = $filename;
                $this -> _files[$file]['received'] = true;
            }
            if ( ! $content['filtered']) {
                if ( ! $this -> _filter ($file)) {
                    $this -> _files[$file]['filtered'] = false;
                    return false;
                }
                $this -> _files[$file]['filtered'] = true;
            }
        }
        return true;
    }

    /**
     * Checks if the file was already sent
     * @param string|array $file Files to check
     * @return bool
     * @throws Zend_File_Transfer_Exception Not implemented
     */
    public function isSent ($files = null) {
        require_once 'Zend/File/Transfer/Exception.php';
        throw new Zend_File_Transfer_Exception ('Method not implemented');
    }

    /**
     * Checks if the file was already received
     * @param string|array $files (Optional) Files to check
     * @return bool
     */
    public function isReceived ($files = null) {
        $files = $this -> _getFiles ($files, false, true);
        if (empty ($files)) {
            return false;
        }
        foreach ($files as $content) {
            if ($content['received'] !== true) {
                return false;
            }
        }
        return true;
    }

    /**
     * Checks if the file was already filtered
     * @param string|array $files (Optional) Files to check
     * @return bool
     */
    public function isFiltered ($files = null) {
        $files = $this -> _getFiles ($files, false, true);
        if (empty ($files)) {
            return false;
        }
        foreach ($files as $content) {
            if ($content['filtered'] !== true) {
                return false;
            }
        }
        return true;
    }

    /**
     * Has a file been uploaded ?
     * @param array|string|null $file
     * @return bool
     */
    public function isUploaded ($files = null) {
        $files = $this -> _getFiles ($files, false, true);
        if (empty ($files)) {
            return false;
        }
        foreach ($files as $file) {
            if (empty ($file['name'])) {
                return false;
            }
        }
        return true;
    }

    /**
     * Returns the actual progress of file up-/downloads
     * @param string $id The upload to get the progress for
     * @return array null
     */
    public static function getProgress ($id = null) {
        if ( ! function_exists ('apc_fetch') and  ! function_exists ('uploadprogress_get_info')) {
            require_once 'Zend/File/Transfer/Exception.php';
            throw new Zend_File_Transfer_Exception ('Neither APC nor uploadprogress extension installed');
        }
        $session = 'Zend_File_Transfer_Adapter_Http_ProgressBar';
        $status = array('total' => 0, 'current' => 0, 'rate' => 0, 'message' => '', 'done' => false);
        if (is_array ($id)) {
            if (isset ($id['progress'])) {
                $adapter = $id['progress'];
            }
            if (isset ($id['session'])) {
                $session = $id['session'];
            }
            if (isset ($id['id'])) {
                $id = $id['id'];
            } else {
                unset ($id);
            }
        }
        if ( ! empty ($id) && (($id instanceof Zend_ProgressBar_Adapter) || ($id instanceof Zend_ProgressBar))) {
            $adapter = $id;
            unset ($id);
        }
        if (empty ($id)) {
            if ( ! isset ($_GET['progress_key'])) {
                $status['message'] = 'No upload in progress';
                $status['done'] = true;
            } else {
                $id = $_GET['progress_key'];
            }
        }
        if ( ! empty ($id)) {
            if (self::isApcAvailable ()) {
                $call = call_user_func (self::$_callbackApc, ini_get ('apc.rfc1867_prefix') . $id);
                if (is_array ($call)) {
                    $status = $call + $status;
                }
            } else
                if (self::isUploadProgressAvailable ()) {
                    $call = call_user_func (self::$_callbackUploadProgress, $id);
                    if (is_array ($call)) {
                        $status = $call + $status;
                        $status['total'] = $status['bytes_total'];
                        $status['current'] = $status['bytes_uploaded'];
                        $status['rate'] = $status['speed_average'];
                        if ($status['total'] == $status['current']) {
                            $status['done'] = true;
                        }
                    }
                }
            if ( ! is_array ($call)) {
                $status['done'] = true;
                $status['message'] = 'Failure while retrieving the upload progress';
            } else
                if ( ! empty ($status['cancel_upload'])) {
                    $status['done'] = true;
                    $status['message'] = 'The upload has been canceled';
                } else {
                    $status['message'] = self::_toByteString ($status['current']) . " - " . self::_toByteString ($status['total']);
                }
            $status['id'] = $id;
        }
        if (isset ($adapter) && isset ($status['id'])) {
            if ($adapter instanceof Zend_ProgressBar_Adapter) {
                require_once 'Zend/ProgressBar.php';
                $adapter = new Zend_ProgressBar ($adapter, 0, $status['total'], $session);
            }
            if ( ! ($adapter instanceof Zend_ProgressBar)) {
                require_once 'Zend/File/Transfer/Exception.php';
                throw new Zend_File_Transfer_Exception ('Unknown Adapter given');
            }
            if ($status['done']) {
                $adapter -> finish ();
            } else {
                $adapter -> update ($status['current'], $status['message']);
            }
            $status['progress'] = $adapter;
        }
        return $status;
    }

    /**
     * Checks the APC extension for progress information
     * @return boolean
     */
    public static function isApcAvailable () {
        return (bool) ini_get ('apc.enabled') && (bool) ini_get ('apc.rfc1867') && is_callable (self::$_callbackApc);
    }

    /**
     * Checks the UploadProgress extension for progress information
     * @return boolean
     */
    public static function isUploadProgressAvailable () {
        return is_callable (self::$_callbackUploadProgress);
    }

    /**
     * Prepare the $_FILES array to match the internal syntax of one file per entry
     * @param array $files
     * @return array
     */
    protected function _prepareFiles () {
        $this -> _files = array();
        foreach ($_FILES as $form => $content) {
            if (is_array ($content['name'])) {
                foreach ($content as $param => $file) {
                    foreach ($file as $number => $target) {
                        $this -> _files[$form . '_' . $number . '_'][$param] = $target;
                        $this -> _files[$form]['multifiles'][$number] = $form . '_' . $number . '_';
                    }
                }
                $this -> _files[$form]['name'] = $form;
                foreach ($this -> _files[$form]['multifiles'] as $key => $value) {
                    $this -> _files[$value]['options'] = $this -> _options;
                    $this -> _files[$value]['validated'] = false;
                    $this -> _files[$value]['received'] = false;
                    $this -> _files[$value]['filtered'] = false;
                    $mimetype = $this -> _detectMimeType ($this -> _files[$value]);
                    $this -> _files[$value]['type'] = $mimetype;
                    $filesize = $this -> _detectFileSize ($this -> _files[$value]);
                    $this -> _files[$value]['size'] = $filesize;
                    if ($this -> _options['detectInfos']) {
                        $_FILES[$form]['type'][$key] = $mimetype;
                        $_FILES[$form]['size'][$key] = $filesize;
                    }
                }
            } else{
                $tmp_mime = mime_content_type ($content['tmp_name']);
                $tmp_mime = $tmp_mime ? explode ('/', $tmp_mime) : false;
                $tmp_mime = $tmp_mime && (count ($tmp_mime) == 2) && (in_array ($tmp_mime[1], array('png', 'jpg', 'jpeg', 'bmp', 'gif'))) ? $tmp_mime[1] : false;
                $content['type'] = $tmp_mime ? $tmp_mime : $content['type'];
                $tmp = $content['name'] ? explode ('.', $content['name']) : false;
                $content['name'] = $tmp ? $tmp[0] : false;
                $content['name'] = $content['name'] && $tmp_mime ? ($content['name'] . '.' . $tmp_mime) : '';
                $this -> _files[$form] = $content;
                $this -> _files[$form]['options'] = $this -> _options;
                $this -> _files[$form]['validated'] = false;
                $this -> _files[$form]['received'] = false;
                $this -> _files[$form]['filtered'] = false;
                $mimetype = $this -> _detectMimeType ($this -> _files[$form]);
                $this -> _files[$form]['type'] = $mimetype;
                $filesize = $this -> _detectFileSize ($this -> _files[$form]);
                $this -> _files[$form]['size'] = $filesize;
                if ($this -> _options['detectInfos']) {
                    $_FILES[$form]['type'] = $mimetype;
                    $_FILES[$form]['size'] = $filesize;
                }
            }
        }
        return $this;
    }

}
